"John Hall" wrote in message
...
Just got the Dec/Jan Copy . In the article titled"Shop compressed air
for in house tire service" The author describes in detail a coil of
copper tube he installed in his air line, but doesn't tell us why. Am
I missing something? Is it obvious why? All I can see is it adds
volume to the system and might be a good way to camoflage a still from
the revenuers.

Anybody have any ideas?

John

Expansion and cooling.

Bernd